Wednesday, August21, 2019

Marine Weather and Tides
Olmos Park, TX

Version 3.4
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at Allen

Sunrise 7:04AMSunset 8:09PM Wednesday August 21, 2019 10:28 AM CDT (15:28 UTC) Moonrise 10:54PMMoonset 11:18AM Illumination 65% Phase: Waning Gibbous; Moon at 21 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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7 Day Forecast for Marine Location Near Olmos Park, TX
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location: 29.4, -98.48     debug

Area Discussion for - Austin/San Antonio, TX
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Fxus64 kewx 211146
area forecast discussion
national weather service austin san antonio tx
646 am cdt Wed aug 21 2019

At ksat kssf, MVFR CIGS mix out mid morning around 21 14z and return
overnight into Thursday morning 22 08z-15z. At kaus, a southwesterly
component to the lower level flow this morning and overnight into
Thursday morning will keep MVFR level clouds few-sct, though will
monitor for possible updates to mention cigs. Otherwise,VFR flying
conditions will prevail. At the i-35 sites, southerly winds up to 8
kts back to southeasterly this afternoon, increase to 9 to 15 kts
with a few gusts to 22 kts with the passage of the seabreeze this
evening, then veer to southerly at 4 to 9 kts tonight. At kdrt,
easterly winds 5 to 10 kts veer to southeasterly at 10 to 15 kts with
a few gusts to 22 kts late morning into afternoon, then back to
easterly at 5 to 10 kts this evening.

Prev discussion issued 344 am cdt Wed aug 21 2019
short term (today through Thursday)...

the upper level ridge of high pressure which has kept the area hot
and dry for the last several days will begin to break down Wednesday
into Thursday. While the trend of hot and mostly dry weather will
continue temperatures will moderate slightly, with highs one or two
degrees cooler than they have been. This will also mean that rather
than 108-110 afternoon heat index values, heat indices for Wednesday
and Thursday will run more in the 103-106 range. In addition to the
slightly cooler temperature there will be slight chances for showers
and thunderstorms each afternoon east of the interstate 35 corridor
due to the coastal sea breeze. While coverage should be less than
what was seen on Tuesday, a lucky few should get a brief break from
the heat and some beneficial rain Wednesday and Thursday afternoons.

Overnight lows will continue to run several degrees above normal, in
the mid to upper 70s, while afternoon highs trend closer to normal,
but remain one to two degrees above normal.

Long term (Thursday night through Tuesday)...

Friday will be similar to Wednesday and Thursday with afternoon highs
in the upper 90s across much of the area, with triple digit heat
closer to the rio grande plains. Models continue to differ with their
solutions for Saturday and beyond. All 3 global models:
gfs ECMWF canadian develop a low pressure system across northern
mexico Friday night into Saturday morning. The 00z GFS remains the
strongest with this low pressure system, having it catch the tail end
of the trough dropping from the plains into the SE CONUS Saturday
night into Sunday. The canadian is similar, but slightly slower than
the GFS in terms of timing. The ECMWF is the weakest with this low
pressure system and leaves it across northern mexico. The GFS and the
canadian are wetter solutions as they drag the low pressure across
the rio grande and south texas late in the weekend. The ECMWF is the
drier of the solutions. Despite still maintaining the low pressure
feature the 00z GFS did trend closer to the 00z ECMWF with less qpf.

Will continue to lean towards the drier ECMWF which maintains 20 to
30 percent pops for the weekend across much of the area. Regardless
of the rainfall coverage, the weakness of the ridge and potentially
increased cloud cover will keep afternoon highs for Saturday into
early next week close to normal for the latter half of august. While
models do show the ridge strengthening early next week, the center of
the ridge will be over oklahoma and north texas rather than south and
west texas. This keeps slight chance pops in the forecast due to
increased moisture and potentially the upper level low still hanging
around south texas as an inverted trough. While it is good to see
rain chances in the forecast not everyone will see rain over the next
7 days as coverage will generally be isolated.

Preliminary point temps pops
Austin camp mabry 99 77 99 77 98 10 - 0 - 10
austin bergstrom intl airport 98 75 98 75 98 10 - 0 - 10
new braunfels muni airport 97 74 98 74 98 10 - - - 10
burnet muni airport 97 74 98 74 97 - 0 0 0 -
del rio intl airport 102 77 101 77 102 0 0 0 10 -
georgetown muni airport 99 76 100 76 98 10 - 0 0 -
hondo muni airport 101 74 101 75 101 - 0 0 10 -
san marcos muni airport 99 75 99 75 98 10 - - - 10
la grange - fayette regional 99 76 99 76 98 20 10 20 - 20
san antonio intl airport 99 77 98 77 98 10 0 - 10 -
stinson muni airport 99 77 98 76 99 10 0 0 10 10

Ewx watches warnings advisories

Aviation... 04
short-term long-term... Treadway

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Antonio, Stinson Municipal Airport, TX5 mi35 minS 510.00 miFair84°F73°F70%1015.4 hPa
San Antonio - Kelly Field, TX5 mi92 minS 910.00 miMostly Cloudy80°F72°F78%1016.4 hPa
San Antonio, San Antonio International Airport, TX10 mi37 minS 910.00 miPartly Cloudy84°F70°F63%1015.9 hPa
Randolph Air Force Base, TX14 mi92 minS 710.00 miPartly Cloudy80°F74°F82%1016.7 hPa
Castroville Municipal Airport, TX20 mi53 minSSE 710.00 miMostly Cloudy81°F70°F70%1018.3 hPa

Link to 5 minute data for KSKF

Wind History from SKF (wind in knots)
Last 24hrSE7--SE9SE7E7--E8SE9E8SE7SE10--------SE6--S4SE4S4------S7
1 day agoS8--SE10S3E8SE6E7S7SE11SE14
2 days agoS9S8--S9SE4S9SE7S7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Austin/San Antonio, TX (11,2,3,4)
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Ground Weather Radar Station Austin/San Antonio, TX
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.